Script to monitor Exchange 2010 queue and send email alerts if threshold is reached

This is a script that can be scheduled as a scheduled task and run every few minutes on a server and exchange management tools installed. This script monitors the exchange queues on your CAS servers and send email alerts (make sure you specify an external email address as well) if the queue threshold that you specify is reached. 

# Script:    Exch2010QueueMonitor.ps1 
# Purpose:  This script can be set as a scheduled task to run every 30minutes and will monitor all exchange 
#2010 queue's. If a threshold of 30 is met an  
#            output file with the queue details will be e-mailed to all intended admins listed in the e-mail settings 

# Comments: Lines 27, 31-35 should be populated with your own e-mail settings 
# Notes:     
#            - tested with Exchange 2010 SP1 - SP3
#            - The log report output file will be created under "C:\Support\Scripts\queue.txt" 

$snapins = Get-PSSnapin
$snapins | foreach-Object {

if ($_.name -match "Exchange")
{
$exchloaded = $TRUE
}
}
if ($exchloaded -eq $TRUE)
{
if ($showgui)
{
Write-Host -ForegroundColor Green "Exchange 2010 Snapin already loaded."
}
}
else
{
Add-PSSnapin *Exchange*
if ( $showgui ) { Write-Host -ForegroundColor Green "Exchange 2010 Snapin had to be loaded." }
}

$filename = “C:\Support\Scripts\queue.txt” 
Start-Sleep -s 10 
if (Get-ExchangeServer | Where { $_.isHubTransportServer -eq $true } | get-queue | Where-Object { $_.MessageCount -gt 30 }) 

{ 

Get-ExchangeServer | Where { $_.isHubTransportServer -eq $true } | get-queue | Where-Object { $_.MessageCount -gt 30 } | Format-Table -Wrap -AutoSize | out-file -filepath C:\Support\Scripts\queue.txt 
Start-Sleep -s 10 

$smtpServer = “smtprelay.domain.com”   #your smtp server
$msg = new-object Net.Mail.MailMessage
$att = new-object Net.Mail.Attachment($filename) 
$smtp = new-object Net.Mail.SmtpClient($smtpServer) 
$msg.From = “noreply_exchange@domain.com” #send as address
$msg.To.Add("admin1@domain.com")  #change this address for admin address
$msg.To.Add("admin2@externaldomain.com") # add external email address like gmail etc
$msg.Subject = “CAS SERVER QUEUE THRESHOLD REACHED - PLEASE CHECK EXCHANGE QUEUES” 
$msg.Body = “Please see attached queue log file for queue information” 
$msg.Attachments.Add($att) 
$smtp.Send($msg) 

}